在 Squat 训练中对不同速度损失值的急性反应,有和没有血流限制
Juan Sánchez-Valdepeñas1,2, Pedro J Cornejo-Daza1,2, José Páez-Maldonado1,3
1Science-Based Training Research Group, Department of Sports and Computer Sciences, Universidad Pablo de Olavide, Seville, Spain.
International journal of sports physiology and performance
|December 5, 2024
概括
血流限制 (BFR) 和速度损失 (VL) 门对抗力训练产生严重影响. 然而,特定的VL大小会导致类似的性能损害,无论BFR如何,这表明VL是疲劳的关键因素.
科学领域:
- 运动生理学 运动生理学
- 运动科学 运动科学 运动科学
- 生物力学 生物力学
背景情况:
- 减速 (VL) 是阻力运动期间神经肌肉疲劳的关键指标.
- 血流限制 (BFR) 是一种训练方法,可以增加疲劳的发展.
- 了解VL和BFR之间的相互作用对于优化培训协议至关重要.
研究的目的:
- 为了比较不同速度损失 (VL) 值 (20%和40%) 在自由流 (FF) 和血流限制 (BFR) 条件下的急性影响.
- 为了分析机械,代谢,神经肌肉和收缩反应在全 (SQ).
主要方法:
- 20名力量训练的男性完成了四个SQ协议,在1-RM的60%,不同的VL (20%对40%) 和血流 (FF对BFR).
- 血流限制设置为动脉封闭压力的50%.
- 测量包括张力学图,血乳酸,反运动跳跃,最大自发同度收缩和特定速度的性能.
主要成果:
- 在BFR和VL之间没有发现显著的相互作用.
- 与FF相比,BFR协议导致更少的重复和更低的乳酸增加.
- 较高的VL (40%) 导致更多的重复,但机械性能较差,电肌图中位数频率较低.
- 运动后,40%的VL显示出更高的乳酸盐,变化的张力学图和受损的跳跃/俯卧表现,而20%的VL则显示出更高的乳酸盐,变化的张力学图和受损的跳跃/俯卧表现.
结论:
- 血流的限制加快了抵抗运动期间的疲劳.
- 减速的程度,而不是血流状况,决定了性能受损的程度.
- 减速是神经肌肉疲劳和性能下降的关键决定因素.
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